Pada tahun ia kembali ke Leiden untuk meraih gelar doktor. Pada tahun ia meninggalkan layanan sipilnya dan menjadi kepala sekolah di Malangdan kemudian Kota Probolinggo. Artikel ilmiah pertama diterbitkan pada tahun Pada tahun yang sama, ia menikahi seorang guru sekolah, Carolinia Johanna Mekkink. Dia mulai serius mendalami aspek ilmiah di saat masih bekerja di Inspektorat. Sewaktu di Batavia, ia bertemu profesor Jawa Poerbatjarakayang kemudian memberinya pelajaran mingguan dalam bahasa Jawa dan budaya. Kemudian ia pindah ke Batavia, pertama untuk bekerja di kota, lalu museum, perpustakaan, dan kemudian di Inspektorat Sekolah Menengah. Saat berlayar ke Bataviadia membaca tentang sejarah Indonesia, sehingga memicu minatnya untuk kali pertama. Pada tahunia bekerja pada Pemerintah Hindia Belanda sekarang Indonesia. Sejarawan dan orientalis Johan Huizingaadalah salah seorang di antara profesor di sana. Pada tahunia melanjutkan ke Universitas Leiden untuk belajar sejarah. During school vacations he continued his research in Batavia, publishing articles on the Trunajaya rebellion and the fall of Mataram.De Graaf lahir di RotterdamBelanda, pada 2 Desemberdan di sana dia juga bersekolah. He took his Javanese students to visit historical sites and Islamic holy sites throughout Java, despite the school being a Protestant school. Inhe returned to the Indies and resumed teaching in Surakarta. Colenbranderwhose work had initially sparked his interest in Indonesian history. In he returned to Leiden to earn his doctorate. In de Graaf left government service and became a schoolmaster in Malangand then Prabalingga. His first scholarly article was published in In the same year he married a teacher, Carolinia Johanna Mekkink. He began to pursue his scholarly interest while still having the Inspectorate job. While at Batavia he met the Javanese professor Poerbatjarakawho then gave him weekly lessons in Javanese language and culture. Subsequently, he moved to Batavia, first to work at the city's museum library, and then at the Inspectorate of Middle Schools. While he sailed to Batavia today's Jakartahe read about Indonesian history, sparking his interest for the first time. In he took up a government job in Dutch East Indies today's Indonesia. The historian and orientalist Johan Huizinga was among his professors there. Inhe went to Leiden University to study history. Ricklefs called him the "father of the study of Javanese history ", while Javanist Theodoor Gautier Thomas Pigeaud said his works formed "a substantial contribution to the study of the national history of Indonesia. His works extensively consulted both European and Indonesian sources, one of the first trained historians to do so. His works covered the history of Indonesia in general, with emphasis on sixteenth- and seventeenth-century Java. He suffered a serious stroke in and died two years later. He taught at various institutions, including Leiden, until and continued to publish scholarly works, even after his retirement. After a brief assignment at the University of Indonesiahe returned to the Netherlands. Difference recepteur muscarinique et nicotinique pdfĪt the same time, he pursued his interest in the history of Indonesia and published books and articles on the topic. Trained as historian at Leiden Universityhe moved to Batavia today's Jakarta to take a government job, and later became a teacher for various schools in Indonesia. Hermanus Johannes de Graaf 2 December - 24 August was a Dutch historian specialising in the history of JavaIndonesia's most populous island.